BALTIMORE — The Ravens sustained another blow to their defensive line in Sunday’s win over Houston as backup nose tackle Terrence Cody left the game with a knee injury in the first half and didn’t return.

The fourth-year defensive lineman injured his left knee in the first quarter before being taken to the locker room. His absence left the Ravens with only one healthy reserve defensive lineman — second-year end DeAngelo Tyson — since veteran Marcus Spears was already filling in for the injured Chris Canty and rookie Brandon Williams was also inactive.

Coach John Harbaugh acknowledged that Cody could be sidelined for a while, but he appeared to avoid a long-term injury. Outside linebackers Pernell McPhee and Courtney Upshaw saw time along the defensive line with the Ravens shorthanded for much of the game.

“It does not look to be a long-term sprain,” Harbaugh said. “We’ll know more [Monday]. It could be a week, but more likely, it will be a couple weeks. We’ll see.”

Backup running back Shaun Draughn suffered a high ankle sprain and reserve linebacker and special-teams contributor Albert McClellan sustained a minor hip injury, according to Harbaugh.

The Ravens are already dealing with a plethora of injuries as all seven players — including Pro Bowl running back Ray Rice — were deactivated for Sunday’s game due to health reasons.